#include <iostream>
#include <vector>
#include <numeric>
 
using namespace std;
 
int main() {
    int n;
    cin >> n;
    vector<int> weights(n);
    for (int i = 0; i < n; ++i) {
        cin >> weights[i];
    }
    
    int total = accumulate(weights.begin(), weights.end(), 0);
    if (total % 2 != 0) {
        cout << "Sorry,I can't!" << endl;
        return 0;
    }
    
    int target = total / 2;
    vector<bool> dp(target + 1, false);
    dp[0] = true;
    
    for (int weight : weights) {
        for (int j = target; j >= weight; --j) {
            if (dp[j - weight]) {
                dp[j] = true;
            }
        }
    }
    
    cout << (dp[target] ? "Of course,I can!" : "Sorry,I can't!") << endl;
    return 0;
}